don't attempt to return attached files for blogposts not listed

htdocs/artefact/blog/lib.php

@@ -487,7 +487,7 @@ class ArtefactTypeBlogPost extends ArtefactType {
                                 'artefacttype', 'blogpost', 'parent', $id);
 
         // Get the attached files.
-        if ($count > 0) {
+        if (count($result) > 0) {
             $idlist = implode(', ', array_map(create_function('$a', 'return $a->id;'), $result));
             $files = get_records_sql_array('
                SELECT

htdocs/artefact/blog/view/index.js.php

@@ -48,6 +48,7 @@ var postlist = new TableRenderer(
     'index.json.php',
     [undefined, undefined, undefined]
 );
+postlist.limit = 10;
 
 postlist.rowfunction = function(d, n, gd) {